I've got an FL18, FL20, FL22HD, and an FLX28.
That way if anyone goes in the wheel house they have a vexilar. Tri Beams on all of them.
My first was an FL20 and I still prefer the way it looks and fishes vs the other vexilars. I also like the digital depth add on for the 20 vs the one in the FLx28 display. More of a preference of what I was use to then anything.
The FLx28 is a great flasher, and has some nice options like weed mode, but I didn't really find anything totally game changing in the FLx28 vs the other flashers I have.
Overall, I find the FL18 has the options that I need......bottom zoom, LP mode, and the digital depth add on.
I don't believe vexilar is comming out with any new sonars....they took the FL12 & FL20 and upgraded them to the FLX series last year.